If there are no requests for the given request key, or if the notifier name does not exist on the MobiLink server, the result
is NULL. If NULL is provided for the request key, then the remote ID of the user is used as the request key. If a request
does exist, the resulting message is returned in the form: [subject]content (for example, [sync]profile1).

This function communicates over the network as it retrieves responses from the MobiLink server. As a result, this function
may require a long execution time resulting from network latency. During execution, there may be periods when the function
can execute in the background, allowing work to be performed in the runtime on other connections. These periods are not guaranteed
however, and depend on the complexity of the SQL. The recommended method for users to retrieve a MobiLink address to use in
this function is to use the sync_profile_option_value function with an existing synchronization profile to get the value for
the Stream profile option. The value returned by this function call can be used directly as the MobiLink address parameter.